Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 0 66:45
1998 0 46:00
1999 1 79:15
2000 1 114:15
2001 2 119:45
2002 4 311:15
2003 4 433:15
2004 5 539:15
2005 28 741:30
2006 3 671:30
2007 8 742:30
2008 6 700:00
2009 14 629:45
2010 4 570:15
2011 2 520:15
2012 31 543:15
2013 8 410:30
2014 8 500:15
2015 7 683:45
2016 14 688:45
2017 8 671:00
2018 12 739:00
2019 10 731:30
 
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